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Minor planet follow-up portal
v. 3.17.1
2026 HD4
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Name
CEKRJL2 → 2026 HD4
Type
NEO
Status
Actively Following
Source
Minor Planet Center
UTC date
------------ Any 1.0m ------------
LSC 1.0m - W85-87; (CTIO, Chile)
ELP 1.0m - V37,V39; (McDonald, Texas)
COJ 1.0m - Q63-64; (Siding Spring, Aust.)
CPT 1.0m - K91-93; (Sutherland, S. Africa)
TFN 1.0m - Z31,Z24; (Tenerife, Spain)
------------ Any 0.4m ------------
LSC 0.4m - W89,W79; (CTIO, Chile)
ELP 0.4m - V38,V45,V47; (McDonald, Texas)
OGG 0.4m - T03-04; (Maui, Hawaii)
COJ 0.4m - Q58-59; (Siding Spring, Aust.)
CPT 0.4m - L09; (Sutherland, S. Africa)
TFN 0.4m - Z17,Z21; (Tenerife, Spain)
------------ Any 2.0m ------------
FTS 2.0m - E10; (Siding Spring, Aust.) [MuSCAT4]
FTN 2.0m - F65; (Maui, Hawaii ) [MuSCAT3]
------------ Non LCO ------------
Mt John 1.8m - 474 (Mt John, NZ)
Site
Min Altitude
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Measurements
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Last Update: 2026-Apr-25 00:53
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
61154.0
April 24, 2026
Orbital inclination in deg
9.68026
Longitude of Ascending Node (deg)
70.92132
Arg of perihelion (deg)
208.71215
Eccentricity
0.5023611
Mean distance (AU)
1.8300575
Mean Anomaly (deg)
338.47046
Absolute Magnitude (H)
23.7
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
65
Diameter in meters
(range)
31 - 242
Physical Parameters
Diameter
Initial Diameter Guess using H=23.7 and albedo=0.14 (0.01 to 0.5)
MPC Default
64.63 m
+177.0 / -30.0
Follow-up Details
NEOCP
digest2
score
100
Number of observations
14
Arc length (days)
1.64
Time since last observation (days)
0.26
Spectroscopy Details
Known Taxonomies
None
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